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Robert Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Robert Hart across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Isaac & Annie — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Hart |
| Given Name | Robert S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Clerk |
| Industry | Grocery |
| Class of Worker | PW |
| Hours Worked | 53 |
| Income (1939) | 936 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Clerk |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1919 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Virginia Hart | Daughter | — | 24 | ~1916 |
| Earl Hart | Head | — | 47 | ~1893 |
| Robert Hart | Son | — | 21 | ~1919 |
| Earl Hart | Son | — | 21 | ~1919 |
| Margaret Hart | Spouse | — | 46 | ~1894 |
Census Appearances
1920
None, Maryland
Son, age 1
None, Maryland · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Robert J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 11
Baltimore, Maryland · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 21
Baltimore-City-County, Maryland · implied b. ~1919 — 5 household members
| Surname | Hart |
| Given Name | Robert S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Clerk |
| Industry | Grocery |
| Class of Worker | PW |
| Hours Worked | 53 |
| Income (1939) | 936 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Robert Hart across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Isaac Hart (~0.84 confidence) and mother Annie Hart (~0.92 confidence) and father Harry Hart (~0.92 confidence) and father Carl Hart (~0.92 confidence) and father Earl Hart (~0.92 confidence) and mother Margaret Hart (~0.92 confidence) and mother Margaret Hart (~0.92 confidence). The pedigree spans 2 generations with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.91
Father
Isaac Hart
b. ~1869
Source father>father
● Household
· direct · ~0.84
Mother
Annie Hart
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Harry Hart
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Carl Hart
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Earl Hart
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Margaret Hart
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Margaret Hart
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Hart
Son · 1940 · age 21 · b. ~1919 · Maryland
★ You are viewing this record
Sibling
Virginia Hart
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Hart
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01540-00252)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hampden Bayles | 46 | Son | Broker | Virginia |
| 2 | Earl S. Hart | 47 | Head | Furniture | Maryland |
| 3 | Margaret L. Hart | 46 | Wife | — | Pennsylvania |
| 4 | Robert S. Hart THIS PERSON | 21 | Son | Clerk | Maryland |
| 5 | Earl C. Hart | 21 | Son | Manager | Pennsylvania |
| 6 | Virginia F. Hart | 24 | Daughter | Clerk | West Virginia |
| 7 | Justus H. Foster | 54 | Head | Carpenter Helper | Maryland |
| 8 | Ida May Foster | 51 | Wife | — | Maryland |
| 9 | Justus H. Jr. Foster | 11 | Son | — | Maryland |
| 10 | Eugene Foster | 8 | Son | — | Maryland |
| 11 | Alice M. Foster | 72 | Mother | — | Maryland |
| 12 | Burkley W. Shaffer | 43 | Head | Estimator | Maryland |
| 13 | William E. Shaffer | 20 | Son | Parcel Clerk | Maryland |
| 14 | Margaret E. Shaffer | 16 | Daughter | — | Maryland |
| 15 | Margaret E. Hurley | 63 | Mother-in-law | — | Maryland |
| 16 | Lillian M. Hurley | 35 | Sister-in-law | Trimmer | Maryland |
| 17 | Charles E. Depew | 45 | Head | Salesman | Pennsylvania |
| 18 | Phila G. Depew | 44 | Wife | — | Maryland |
| 19 | Francis G. Brumbley | 21 | Daughter | Machine Operator | Maryland |
| 20 | Walter S. Brumbley | 19 | Step-son | Shipping Clerk | Maryland |
| 21 | Daniel E. Brumbley | 17 | Step-son | Truck Driver | Maryland |
| 22 | Frank Hodgin Eley | 39 | Head | Fireman | Virginia |
| 23 | Elsie Eley | 46 | Wife | Substitute | Maryland |
| 24 | John H. Jr. Nyce | 42 | Head | Buyer | Maryland |
| 25 | Marie G. Nyce | 42 | Wife | — | Maryland |
| 26 | Mary G. Nyce | 16 | Daughter | — | Maryland |
| 27 | Patricia A. R. Nyce | 14 | Daughter | — | Maryland |
| 28 | Barbara R. Nyce | 6 | Daughter | — | Maryland |
| 29 | John H. Sr. Nyce | 72 | Father | — | Maryland |
| 30 | Elmer W. Sanders | 28 | Head | Painter | Maryland |
| 31 | Ruth E. Sanders | 28 | Wife | — | Maryland |
| 32 | Ruth E. Sanders | 6 | Daughter | — | Maryland |
| 33 | Jacqueline M. Sanders | 4 | Daughter | — | Maryland |
| 34 | Robert S. Sanders | 67 | Father | — | Maryland |
| 35 | Abraham H. Clark | 50 | Head | Repairman | Maryland |
| 36 | May A. Clark | 44 | Wife | — | Maryland |
| 37 | Doris May Clark | 16 | Daughter | — | Maryland |
| 38 | William H. Rustie | 53 | Brother-in-law | Welder | Maryland |
Related Census Records
Pedigree Summary
Robert + 2 siblings
Gen 1 · 6 parents
~0.92
Gen 2 · 1 grandparents
~0.83
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)